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Related Experiment Videos

A note on methodological fallacies in the "X% fallacy" literature.

C E McConnel

    International Journal of Aging & Human Development
    |January 1, 1983
    PubMed
    Summary

    The "4-5% fallacy" overestimates nursing home institutionalization risk. New analysis using national data reveals the true annual risk is between 6 and 9 percent, not 25 percent.

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    Area of Science:

    • Gerontology
    • Public Health
    • Biostatistics

    Background:

    • Previous literature suggested a 25% risk of nursing home institutionalization, a figure known as the "4-5% fallacy."
    • This estimate was based on potentially flawed implicit assumptions regarding resident data.

    Purpose of the Study:

    • To re-evaluate the actual risk of nursing home institutionalization.
    • To challenge the "4-5% fallacy" by applying a more rigorous statistical approach.

    Main Methods:

    • Utilized the most recent national statistics on nursing home residency and discharge data.
    • Developed a novel measurement technique to estimate the range of nursing home residents.
    • Calculated the annualized risk of institutionalization based on updated residency and discharge figures.

    Main Results:

    • The study identified a maximum and minimum number of nursing home residents for 1976.
    • The recalculated annualized risk of institutionalization was found to be between 6 and 9 percent.
    • This range contradicts the previously cited 25% risk, indicating a significant overestimation in prior studies.

    Conclusions:

    • The "4-5% fallacy" is demonstrably inaccurate due to invalid underlying assumptions.
    • The true annual risk of nursing home institutionalization is substantially lower, estimated between 6-9%.
    • This revised risk estimate provides a more accurate basis for public health policy and resource allocation concerning long-term care.

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